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FACTOR MARKET, EFFICIENCY: A factor market achieves efficiency in the allocation of resources by equating marginal revenue product to factor price. Perfect competition, as the efficiency benchmark, is the only market structure to satisfy this criterion and achieve factor market efficiency. Monopsony, oligopsony, and monopsonistic competition are inefficient because they equate marginal revenue product to marginal factor cost, both of which are greater than factor price.
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FOUR-FIRM CONCENTRATION RATIO The proportion of total output in an industry produced by the four largest firms in an industry. This is one of two common concentration ratios. The other is the eight-firm concentration ratio. Another related measure is the Herfindahl index. The four-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and the extent of market control held by the four largest firms in the industry.
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BROWN PRAGMATOX
[What's This?]
Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius seeking to buy either a case of blank recordable DVDs or a pair of red goulashes with shiny buckles. Be on the lookout for infected paper cuts.
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The 1909 Lincoln penny was the first U.S. coin with the likeness of a U.S. President.
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"If football taught me anything about business, it is that you win the game one play at a time." -- Fran Tarkenton, Football Player
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IRT
International Trade Commission
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